From: Jean-Marc Beroud <jean-marc.beroud@...>
Date: 2001-04-24T01:40:24+09:00
Subject: [ruby-talk:14087] threads and IO.popen questions

Hello,

I'm starting coding with ruby. 2 questions:

  - It seems that all threads are running on a single CPU on a SMP
systems (SUN Sparc)...
    Is it true? If yes, is there a trick to make threads running on all
CPUs?

  - IO.popen. Assume that test.gz does not exists.

    file = "test.gz"

    begin
        IO.popen( "gzip -cd #{file}" )
  
        rescue
             # I don't see this message
             $stderr.puts "ERROR: #{file}: #{$!}"; exit 1
    end

    Why does IO.popen not generate an exception (gzip fails)?
    How can I test if gzip is successful or not?

Greets,

Jean-Marc Beroud